LAFL3 by Hoya

Obsolete Unknown Environmentally Dangerous

LAFL3 by Hoya is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.700301 and a Vd of 47.836538. It has dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.700301
Abbe Number (Vd) 47.836538
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.83083 - 0.0116547\,\lambda^2 + 0.0192724\,\lambda^{-2} + 0.00125807\,\lambda^{-4} - 0.000107026\,\lambda^{-6} + 6.26454 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) —
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
K-LaFn3 Sumita 1.7 48.0
LAFN3 Sumita 1.7 48.0
LAM51 Ohara 1.699998 48.078869
H-LAF51 CDGM 1.7 48.079839
S-LAM51 Ohara 1.699998 48.080479
LAFN2 Sumita 1.697 48.5
S-LAM59 Ohara 1.697002 48.516066
LAM59 Ohara 1.697002 48.535864
H-LAF1 CDGM 1.69362 49.193837
H-LAF2 CDGM 1.717 47.888609
Similar Glasses (Hoya)
Glass Manufacturer nd Vd Compare
LAFL2 Hoya 1.697 48.514006
LAFL23 Hoya 1.689 49.475821
LAF30 Hoya 1.717 47.97772
LAF3 Hoya 1.717 47.98
LAFL20 Hoya 1.68248 48.197606
LAFL1 Hoya 1.686004 49.347081
LACL5 Hoya 1.693503 50.787122
LAC10 Hoya 1.72 50.35
BAF22 Hoya 1.682496 44.671672
LACL9 Hoya 1.6779 50.551353
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